目前,在大丽花的生产上,控制株高使其矮化是一项重要任务。要达到这个目的,首先应选择矮杆品种。在头一年将生长健壮的矮杆品种按花色、花型及株高分别归类贮藏越冬。到翌春3月上旬,于温室内把经贮藏越冬的块根栽在盛有素沙的盆中,保持15℃以上的温度,进行催芽。待脚芽长出2片真叶时,从基部摘取下来。插入素沙中催根。蔽荫养护10天左右,再移到温室的玻璃房下见直射光。约经20天,分别用旧盆土栽入头号筒盆内、同时移到室外养护。在养护过程中,采取多次翻盆、缩剪根须的办法,抑制生长。初次栽入时,须把盆底的排水孔尽量凿大,下面垫一层碎瓦片作排水层,以国上7、沙2、干粪1作为培养上。当盆孔出现白根时进行第一次翻盆, At present, it is an important task to control plant height to dwarf the production of dahlia. To achieve this goal, the first choice should be short bar varieties. In the first year will grow sturdy dwarf varieties by flower color, flower type and plant height were classified as winter storage. To the next spring in early March, in the greenhouse, the root of the storage of winter roots planted in a pot of sand, keep the temperature above 15 ℃, the germination. When the foot bud grows 2 true leaves, pick it off from the base. Inset sand into the root. Shadow cover conservation for about 10 days, and then moved to the greenhouse glass room to see direct light. After about 20 days, they were planted in the No. 1 tub with the old potting soil and moved to the outdoors for conservation. In the conservation process, take several times to turn the basin, cut the root hair way to inhibit growth. The first planting, the basin should be drained as much as possible, a layer of broken tiles below the drainage layer for the country, 7, sand 2, dry dung 1 as a training. When the white hole occurs when the first basin turn basin,